Abstract: A method and system for producing a vulnerable vehicle awareness notification by a server device may include, on a server side: receiving, from a first client device, a location data element, representing current geographical location of the first client device; repeatedly receiving, from one or more second client devices, a corresponding position sample data element associated with a current timestamp; for at least one second client device, identifying a condition of geographical vicinity between the first client device and the at least one second client device; and based on said identified condition, sending the subset of position samples to the first client device. The first client device may, in turn, produce the vulnerable vehicle awareness notification based on the received subset of position samples.

Abstract: A system for predicting and preventing car accidents and collisions between vehicles and pedestrians, which comprises a plurality of mobile devices each carried by a pedestrian user or a user riding in a vehicle; a dedicated software application installed on each of the mobile devices adapted to detect the location of the mobile device; one or more geographic servers, each geographic server assigned to a geographic territory and adapted to communicate position and motion information with mobile devices in its geographic territory; and a bridge module adapted to register and sign-in users to the system, and establish and maintain a connection between mobile devices and geographic servers. The geographic server of each territory receives ongoing position and motion updates from all of the mobile devices in its territory and transmits ongoing position and motion updates associated with position and motion of other mobile devices to mobile devices in its territory.